[jira] [Resolved] (HBASE-6262) Row Count hangs due to printing raw without filtering for control codes/non-displayable characters

["Cosmin Lehene (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-6262?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Cosmin Lehene resolved HBASE-6262.
----------------------------------
    Resolution: Duplicate

duplicated (and fixed by) HBASE-7476

> Row Count hangs due to printing raw without filtering for control codes/non-displayable characters
> --------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-6262
>                 URL: https://issues.apache.org/jira/browse/HBASE-6262
>             Project: HBase
>          Issue Type: Bug
>          Components: shell
>            Reporter: Kevin Odell
>         Attachments: hbase-shell.log
>
>
> The problem is the key is printed raw without filtering for control codes/non-displayable characters. Consequently, row 264000's row key includes the data <ESC>P (hex: 1B 50) which initiates a VT100/ANSI DCS sequence, which normally must be terminated by a DCS string terminator code, <ESC>\ (hex: 1B 5C) (cf.
> At row 264000, <ESC>P appears, but is not followed by the <ESC>\ termination code -- so instead of data being output to the display, it is getting buffered by the terminal to complete the DCS command. Result: the data is not displayed (xterminal) or the terminal locks up (gnome-terminal).
> Note that this is a potential for abusing this "feature" to hide/alter information displayed on the screen, since an arbitrary terminal control codes could potentially be constructed and injected into a rowkey.
> If you open a VT100-emulating terminal window can cat the attached file, as-is, it would hang after displaying the starting portion of the line for row 264000.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)